Compilare: user.cpp: In function ‘int main()’: user.cpp:131:28: warning: variable ‘junk’ set but not used [-Wunused-but-set-variable] int m, val, pos, x, y, junk; ^ user.cpp: In function ‘std::pair<T*, T*> split(T*, int)’: user.cpp:92:46: warning: control reaches end of non-void function [-Wreturn-type] return make_pair(nod, tmp.second); } } ^ user.cpp: In function ‘T* kth(T*, int)’: user.cpp:117:69: warning: control reaches end of non-void function [-Wreturn-type] if(nod->st->siz < pos) return kth(nod->dr, pos-nod->st->siz-1); } ^ user.cpp: In function ‘int main()’: user.cpp:129:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv8.in", "r", stdin); fin = stdin; ^ user.cpp:130:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv8.out", "w", stdout); ^ user.cpp: In function ‘void next_char()’: user.cpp:15:35: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, BUFF_SIZE, fin); ^